Otto frowein and wilhelm oberstebrink



(No Model.)

O. PROWEIN & W. OBERSTEBRIN-K.

I WOVEN TUBULAR FABRIC. No. 570,012. Patented Oct. 27, 1896.

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UNITED STATES PATENT OFFICE.

OTTO FROXVEIN AND ILHELM OBERSTEBRINK, OF BARMEN, GERMANY.

WOVEN TUBULAR FABRIC.

SPECIFICATION forming part of Letters Patent No. 570,012, dated October27, 1896. Application filed December 10,1895. 7 Serial No. 571,632. (Nomodel.)

To all whom it may concern.-

Be it known that we, OTTO FROWEIN and WILHELM OBERSTEBRINK, subjects ofthe Emperor of Germany, and residents of Bar inen, Rhenish Prussia,Germany, have invented a new and useful Improvement in \Voven TubularFabrics, of which the following is a specification.

()ur invention relates to improvements in hollow-woven ribbons orhose-bands.

The object of this invention is to make the same length of such ribbonsin less time and cheaper than heretofore, and we attain these objects bygiving to each side of the hollow double or hose-like ribbon itsseparate weftthread and by constructing the ribbon-loom accordingly, sothat it will be able to lay in both wei'ts at the same time, meansbeing'provided that the upper and the lower side of the hose-band may bejoined or connected in such a manner that each side shall be providedwith two selvage edges.

On the accompanying drawings, Figure 1 shows the arrangement of theshuttles in the loom for making the new ribbon, seen from the front. Fi2 is a vertical section along line I I of Fig. 1. Fig. 3 is a verticalsection along line 11 II of Fig. 1. Fig. 4 shows the arrangement of theheddles and the manner of forming the shed. Fig. 5 is a transversesection of a ribbon having separate selvages for the upper and for thelower side. Fig. 6 is a face view of this ribbon.

For making the new hollow ribbon we use, practically, three systems orsets of warpthreads, one set for forming the upper part of the hollowribbon, another set for making the lower part of the hollow ribbon, anda third set for making the edges and connecting the upper web to thelower web, and thus form the hose-like article. Three sorts of sheds areaccordingly necessary. The upper shed serves for making the upperribbon, the lower one for producing the lower ribbon, and the third one,divided equally at both sides of the others, going from the lower shedof the lower ribbon to the upper shed of the upper ribbon. In normalstate, when the shuttles are at rest and no shed is formed, thewarp-threads are all spread in one horizontal plane, this plane formingthe level of the lower shed of the upper side of the ribbon form theupper shedof this ribbon and part of them are pulled down, or they arerather left in the normal lower position, to form the lower shed of theupper ribbon, according to the manner of binding. CL and Z) in Fig. 4show these warp-threads and o. and Z) are the respective heddles, thearrows a and b indicating the throw of the shed up and down.

0 and (Z are the warp-threads for making the lower part of the hollowribbon, d lying in the same horizontal plane as b, both falling,therefore, together in Fig. 4E and forming apparently but one.

0 and d are the respective heddles and c and d are the arrows indicatingthe throw of this shed.

e and fare the warp-threads forming the connection of the two separateribbons woven by passing a shuttle through each of the sheds a b and cd,,respectively, and e f are the corresponding heddles, while arrows eand f indicate the throw of these threads.

The fabric shown by Figs. 5 and 6 has two or more warp-threads i t' andIt outside of the connecting-threads 6 f of samecharacter as the threadsa b c do, the threads t' and 70 forming, then, open or special selvagesfor both the upper and the under side of the hollow ribbon, weft-threadsg and h having the same character as the threads 9 and h in Figs. 5 and6.

Now in order to run an extra shuttle for each separate side of thehollow ribbon at the same time through each of the two sheds and to beable to produce by these means double the quantity, or nearly thatamount, as by the manner of working hitherto in use we use, incombination with the heddle arrangement represented in Fig. 4, theshuttle-driving device shown by Figs. 1, 2, and 3. V

A is a rack pulled to and fro, as usual in ribbon-looms, by the belts Band B alternately. O and G are guide-rollers for these belts. Rack Agears into wheels D D, mounted on pins D and D, which are fast in theframe M of the batten, .and Wheels D and D again drive the pinions E andE on pins E and E', respectively, which also carry the pinions I and Fin gear with the racks of the shuttles K and K, as usual in ribbon-loomsand of the same design.

L is the window or gap in the batten through which the warps a c b cl fc are passed, and it will thus be seen that while the shuttle K passesfrom left to right in the upper shed shuttle K is driven from right toleft in the lower shed, difierent from the old arrange-- ment, where oneshuttle makes a circular way from the upper shed down into the lowershed and back through the upper one again, and so on, requiring,therefore, four runs in four periods of time to make a complete bindingin the upper part of the ribbon and in the lower part of the same,whereas with our new arrangement only two periods of time are requiredto do the same amount of work.

Ve are aware that prior to our invention hollow-woven ribbons have beenmade, and means for making the same are known, and we therefore do notclaim, broadly, such ribbons, nor the devices generally for making suchribbons; but

\Vhat we do claim as our invention, and desire to secure by LettersPatent, is

In a hollow-woven ribbon the combination with the warp-threads a b of aseparate weftthread g binding said warp-threads to form the upper sideof the fabric, of warp-threads 0 cl", special weft-thread h binding saidwarp-threads 0 61 to form the lower side of the fabric, the weft-threadsg and h being of different sizes, as described, the special warpthreadsa f at both edges of the fabric and being bound also by the wefts g hconnectin g both surfaces of the ribbons together, and of two or morewarp-threads 11 and 7c of same order as the threads a b and 0 clrespectively bound separately by the weft-threads 9 and h respectivelyto form separate selvages for the upper and the lower side of thehollow-woven ribbon.

OTTO FROWVEIN.

XVILH. OBERSTEBRINK. lVitnesses:

A. STRAUSS, v

F. H. STRAUSS.

